An effective buffer space management in Serial RapidIO endpoint

RapidIO is a high performance open standard for the next-generation embedded interconnection technology. In this paper, an improved pivotal buffer core which plays a crucial role in the RapidIO packet transmission is described in detail. It uses the four-isolated-queue as the outbound framework for better quality of service and a certain amount of blocks with sharing and binding attempts mechanism as the main inbound structure for higher space utilization. It supports the advanced transmitter-controlled flow control so as to effectively manage the buffer space. Simulation results show that the valid link data utilizations of the proposed design with transmitter-controlled flow control could be kept over 95%, comparing to the fact that those of the buffers with basic receiver-controlled flow control gradually decrease to lower than 50% in the same condition.